The Safety and Effectiveness of PEEK Interference Screws in Anterior Cruciate Ligament Reconstruction

Inclusion Criteria: Voluntarily sign the informed consent form; Between the ages of 18 and 75; Positive ADT and positive Lachman test. Unilateral anterior cruciate ligament is confirmed by MRI (without posterior cruciate ligament injury or reconstruction); Tolerated for anterior cruciate ligament reconstruction surgery; Normal contralateral knee Exclusion Criteria: 1. Do not meet the diagnostic criteria of anterior cruciate ligament injury; 2. With posterior cruciate ligament fracture at the same time; 3. X-ray showed a significant degeneration of the knee (more than four degrees of cartilage injury); 4. Knee flexion less than 90 degree; 5. Abnormal body anatomy; 6. Pregnant, breast-feeding or subjects who plan to become pregnant; 7. Serious osteoporosis, malignant tumors; 8. Allergic to implant materials; 9. Patients with severe malnutrition who can not tolerate surgery; 10. Severe coagulopathy, such as hemophilia; 11. Immunodeficiency diseases, including those requiring long-term use of immunosuppressive agents; 12. The injured knee has a wide range of skin diseases; 13. Serious obese patients (BMI\> 35); 14. Patients with severe mental illness can not cooperate with postoperative rehabilitation and patients with severe cardiopulmonary disease can not tolerate surgery; 15. Ipsilateral lower extremity received surgery within the past year; 16. Has participated in any other clinical trial in the past three months; 17. Can not comply with the requirements of the study; 18. Those who the investigator thinks they are inappropriate.